Gas valve wrench



FIG. 1 is a front elevational view of a gas valve wrench showing my new design;

FIG. 2 is an elevational rear view thereof;

FIG. 3 is a top plan view of FIG. 2;

FIG. 4 is a bottom plan view of FIG. 1; and,

FIG. 5 is a right side elevational view of FIG. 1. 

The ornamental design for a gas valve wrench, as shown and described. 